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Aluminium Oxide & Silicon Carbide Grains-FEPA-standard 43-1:2006

Updated:2007-11-14 10:32:36

Aluminium Oxide & Silicon Carbide Grains
FEPA-standard 43-1:2006: Grains of fused aluminium oxide, silicon carbide and other abrasive materials for coated abrasives  Macrogrits P 12 to P 220

FEPA-standard 43-2:2006: Grains of fused aluminium oxide, silicon carbide and other abrasive materials for coated abrasives  Microgrits P 240 to P 2500

 

 

Note:

The mean diameters of macrogrits shown in the table are estimated and for information only, the FEPA-Standard defines them as a range and not a single value.

 

 

MACROGRITS

MICROGRITS

Grit designation

Mean
Diameter
in ?μm

Grit
designation

 Mean grain

size ds50-value in ??m

P 12

1815

P 240

58.5 ?± 2

P 16

1324

P 280

52.2 ?± 2

P 20

1000

P 320

46.2 ?± 1.5

P 24

764

P 360

40.5 ?± 1.5

P 30

642

P 400

35.0 ?± 1.5

P 36

538

P 500

30.2 ?±1.5

P 40

425

P 600

25.8 ?± 1

P 50

336

P 800

21.8 ?±  1

P 60

269

P 1000

18.3 ?±  1

P 80

201

P 1200

15.3 ?±  1

P 100

162

P 1500

12.6 ?±  1

P 120

125

P 2000

10.3 ?±  0.8

P 150

100

P 2500

8.4 ?±  0.5

P 180

82

 

 

P 220

68

 

 

The particle size distribution of macrogrits is determined by sieving, while the microgrits have been measured by sedimentation (US-Sedimentometer).

More information can be found in the FEPA-Standards 43-1:2006 ; 43-2:2006 and in ISO 6344.

 

 

source: http://www.fepa-abrasives.org/

 

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